What is it that governs these combinations? (when colors create light together without being strict complementaries)

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• Colors Create Light Togetherconcept0.875
  The color property that color pairs (often complementary) interact to generate a flash of light, making each other shine; extends to three or more colors summing to a luminous whole.
• Colors create light together like centers cooperating to form a larger being; the interaction intensifies each color as a center.claim0.836
• The rule of hierarchy of color areas is almost universally followed in things with inner light; equal areas of several colors almost never occur in such works.claim0.815
• Boundaries and hairlines, by both separating and uniting adjacent colors, intensify the light and form larger wholes.claim0.812
• The actual colors must be worked out in the place itself, under the influence of nearby and surrounding color and light.claim0.812
  Practical principle that color decisions cannot be made on paper or in a store; they require on-site unfolding.
• Families of color, like echoes, unify the composition by creating hidden similarity among all colors.claim0.782
• Sequence of linked color pairs creates a gradient-like structure that points to and intensifies the main center, giving life to the whole.claim0.780
• Intensity and clarity of individual color arise from both an inherent quality and the support of the whole; making each color shine beautifully forces all colors into harmony.claim0.777